Smoke-consumer and artificial draft.



' No. 879,463. PATENTED FEB. 18,1908

A. H, FORD. SMOKE CONSUMER AND ARTIFICIAL DRAFT.

' APPLICATION FILED AUG. 18, 1906.

ms NORRIS PETERS co.. WASHINGTON, D. Q

UNITED STATES PATENT OFFICE.

ANDREW H. FORD, OF WESTVILLE, TEXAS, ASSIGNOR OF ONE-HALF TO WILLIAM E.PATTERSON, OF LAKE CHARLES, LOUISIANA.

SMOKE-CONSUMER AND ARTIFICIAL DRAFT.

$pecification of Letters Patent.

Patented Feb. 18, 1908.

Application filed August 18. 1906. Serial No. 331-195. I

To all whom it may concern:

Be it known that I, ANDREW H. FORD, a citizen of the United States,residing at VVestville, in the county of Trinity and State of Tex as,have invented a new and useful Smoke- Consumer and ArtificialDraft, ofwhich the following is a specification.

The invention relates to improvements in smoke consumers.

The object of the present invention is to enabling the heat within thefurnace to be maintained at a sufficiently high temperature to consumethe smoke and some of the other gaseous products of combustion, wherebysmoke is prevented and the amount of fuel consumed is materiallylessened.

A further object of the invention is to provide means for producing thenecessary draft within a steam furnace without admitting cold 'air insuflicient quantities to reduce the temperature to a pointbelow that atwhich smoke and other gaseous products are consumed.

Another object of the invention is to provide means for admitting steaminto the furnace for producing the necessary draft without filling thefire box full of steam, and there by choking or smothering the fire.

With these and other objects in view, the invention consists in theconstruction and novel combination of parts hereinafter fully.

described, illustrated in the accompanying drawing, and pointed out inthe claims hereto appended; itbeing understood that various changes inthe form, proportion, size and minor details of construction, within thescope of the claims, may be resorted to without departing from thespirit or sacrificing any of the advantages of the invention.

In the drawing :Figure 1 is a vertical sectional view of a steam furnaceprovided with a smoke consuming device, constructed in accordance withthis invention. Fig. 2 is a plan view, the top casing of the furnacebeing removed.

Like numerals of reference designate corresponding parts in all thefigures of the drawing. 7

1 designates a steam furnace, having a pair of boilers 2 and providedwith a steam pipe 3, arranged horizontally and extending into thefurnace at the front thereof and located above the fire box 5,substantially in or near 1 in the boilers 2. The steam pipe 3, which islocated in the space between the boilers 2,

extends rearwardly to a point above the rear ends of the grate bars 4,and it is adapted to discharge steam over the back of the fire box. Itis connected at its outer end by suitable pipe connections 6 with thesteam dome 7 of one of the boilers 2, and it is provided at its outerend with a valve 8 for controlling the discharge of the steam into thefurnace. The inner end of the steam pipe 3 is provided with a taperingnozzle 9, which reduces the jet of steam and enables the latter to bedischarged into the furnace with great force. l/Vhen the device isemployed in connection with a furnace having two boilers, as illustratedin the accompanying drawings, the

steam pipe 3 is located between the boilers,

pipe' is arranged at each side of the same.

As this arrangement is perfectly obvious, and

involves a mere duplication of the steam pipe 3, illustration thereof isdeemed unnecessary.

The salient feature of the invention resides in arranging the steam pipe3 above the bottom of the boiler. By this arrangement the steam pipe isadapted to draw the flames upward to cause the same to envelop andimpingei against the bottom and sides of the boiler as fully aspossible. To accomplish this the steam pipe or artificial draft isarranged in or near the plane of the level of the water within theboiler, as it has been found by experience that the blast in the furnacewill not go higher than the steam jet, and if it were placed at or belowthe bottom, it would be impossible to envelop in flames, that portion ofthe boiler containing the water, and the same amount of heating surfacecould not be secured. Furthermore, by arranging the steam pipe '3 abovethe bottom of the boiler, it is out of the way when firing the furnacewith wood, and will not melt and run together should it become cloggedfor the space of half an hour, as would be-the case were it arrangedbeneath the bottom of the boiler in the blast of the furnace. It hasalso been found by experience that greater draft can be obtained by aquarter inch pipe, located at the level of the velop and impinge againstthe bottom and sides of the boiler, the smoke and some of the gasesgenerated in the combustion cham- "ber are ignited in passing throughthe flames, and when the furnace once becomes hot the admission of airbeneath the grate bars can be checked and retarded, thereby enabling theheat to be maintained above 460 degrees, which will ignite and consumesuch smoke and gases. The damper in the smoke pipe should be closed mostof the time.

The device will render firing much easier than heretofore, and willgreatly lessen the amount of fuel consumed.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is

1. In a device of the class described, the combination with a furnaceincluding a fire box and boiler, of a steam pipe located above the firebox and also above the bottom of the boiler and arranged exteriorly ofthe latter so as to be in the path of the products of combustion arisingfrom the fire box, and having a discharge end terminating at a point soas to discharge over the back of the said fire box above the plane ofthe bottom of the boiler, whereby the blast from the steam pipe tends todraw the flame and products of combustion upward around and cause themto impinge against the bottom and sides of the boiler.

2. In a device of the class described, the combination with a furnaceincluding a fire box and boiler, of a longitudinally disposed steam pipeextending into the furnace above the fire box and also above the bottomofthe boiler and arranged exteriorly of the latter so as to be in thepath of the products of combustion arising from the fire box, and havingits discharge end located above and adapted to discharge over the backof the firebox in or near the same plane as the level of water withinthe boiler or boilers, whereby the blast from the steam pipe tends todraw the flame and products of combustion upward around and cause themto impinge against the bottom and sides of the boiler.

3. In a device of the class described, the combination with a furnaceincluding a fire box and boiler, of a longitudinally disposed steam pipeentering the front of the furnace and extending into the same above thefire box and arranged above the bottom of the boiler in substantiallythe same plane as the level of water in the boiler of the furnace, andprovided with a tapering nozzle located above and adapted to dischargeover the back of the fire box, said steam pipe being located outside theboiler and within the range of the products of combustion arising fromthe fire box, whereby the blast from the steam pipe tends to draw theflames and products of combustion upward around and cause them toimpinge against the bottom and sides of the boller.

In testimony, that I claim the foregoing as my own, I have heretoaflixed my signature in the presence of two witnesses.

ANDREW H. FORD.

Witnesses:

W. W. WEST, R. N. ATMAR.

